Abstract
Overheating of permanent magnet (PM) machines has become a major technical challenge as it gives rise to magnet demagnetization, degradation of insulation materials, and loss of motor efficiency. This paper proposes a state-of-the-art cooling system for an axial flux permanent magnet (AFPM) machine with the focus on its structural optimization. A computational fluid dynamics (CFD) simulation with thermal consideration has been shown to be an efficient approach in the literature and is thus employed in this work. Meanwhile, a simplified numerical approach to the AFPM machine with complex configuration in 3D consisting of conduction, forced convection, and conjugate heat transfer is taken as a case study. Different simplification methods (including configuration and working conditions) and two optimized fans for forced convection cooling are designed and installed on the AFPM machine and compared to a natural convection cooling system. The results show that the proposed approach is effective for analyzing the thermal performance of a complex AFPM machine and strike a balance between reasonable simplification, accuracy, and computational resource.
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© 2018 Zhejiang University Press, Hangzhou and Springer Nature Singapore Pte Ltd.
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Tan, Z., Song, Xg., Ji, B., Liu, Z., Ma, Je., Cao, Wp. (2018). 3D Thermal Analysis of a Permanent Magnet Motor with Cooling Fans. In: Fang, Y., Zhang, Y. (eds) China's High-Speed Rail Technology. Advances in High-speed Rail Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-5610-9_31
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DOI: https://doi.org/10.1007/978-981-10-5610-9_31
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